Multi-Stage Rectifier Enabled Battery-Free Sensor Platform Utilizing Ambient RF Energy

被引：0
|
作者：
Gu, Xiaoqiang [1 ]
de Almeida, Jorge Virgilio [1 ]
Wu, Ke [1 ]
机构：
[1] Polytech Montreal, Poly GRAMES Res Ctr, Montreal, PQ, Canada
来源：
2021 IEEE MTT-S INTERNATIONAL MICROWAVE AND RF CONFERENCE (IMARC) | 2021年
关键词：
Ambient RF energy; battery-free sensors; multi-stage rectifiers; RF energy harvesting; RF rectifiers; wireless power transfer;
D O I：
10.1109/IMaRC49196.2021.9714653
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ambient radiofrequency (RF) energy harvester scavenges RF power "wastes" and converts them into usable dc output. Considering the limited output of an ambient RF energy harvesting device, this scheme is highly suitable for low-power and low-duty-cycle wireless sensing applications. This work presents a battery-free multi-function sensor platform based on a multi-stage rectifier utilizing ambient RF energy. An analytical model with equivalent circuits is developed to analyze and optimize multi-stage rectifiers. Guided by the theoretical analysis, a 5-stage rectifier is realized. A final experimental demonstration shows that the multi-function sensor platform can sustain itself with the power supply from the 5-stage rectifier harvesting ambient RF energy at a practical power level.
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页数：4
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